<form id="main-contact-form" class="contact-form row" name="contact-form" method="post" action="/default/contact/contact" >
    <div class="form-group col-md-6">    
        <?php echo $this->element->contactName?>
    </div>    
    <div class="form-group col-md-6">
        <?php echo $this->element->email?>
    </div>    
    <div class="form-group col-md-12">
        <?php echo $this->element->subject?>
    </div>
    <div class="form-group col-md-12">        
        <?php echo $this->element->content?>
    </div>                        
    <div class="form-group col-md-12">
        <?php echo $this->element->submit?>        
    </div>
</form>